init: archlens — architecture diagram generator

Hex arch + DDD, tree-sitter parsing, Mermaid/ASCII output.
Supports Rust + Python. 92 tests. CI, diff, --check for staleness detection.

crates/adapters/tree-sitter/tests/rust_analyzer_tests.rs

@@ -0,0 +1,130 @@
+use archlens_domain::{
+    CodeElementKind, FilePath, Language, RelationshipKind, SourceFile, ports::SourceAnalyzer,
+};
+use archlens_tree_sitter::TreeSitterAnalyzer;
+
+fn analyze_rust(source: &str, filename: &str) -> archlens_domain::AnalysisResult {
+    let dir = tempfile::tempdir().unwrap();
+    let file_path = dir.path().join(filename);
+    std::fs::write(&file_path, source).unwrap();
+
+    let analyzer = TreeSitterAnalyzer::new();
+    let source_file = SourceFile::new(
+        FilePath::new(file_path.to_str().unwrap()).unwrap(),
+        Language::Rust,
+    );
+    analyzer.analyze_file(&source_file).unwrap()
+}
+
+#[test]
+fn extracts_rust_struct() {
+    let result = analyze_rust("pub struct Order {\n    id: u64,\n}", "order.rs");
+
+    assert_eq!(result.elements().len(), 1);
+    assert_eq!(result.elements()[0].name(), "Order");
+    assert_eq!(result.elements()[0].kind(), CodeElementKind::Struct);
+}
+
+#[test]
+fn extracts_rust_enum() {
+    let result = analyze_rust(
+        "pub enum Status {\n    Active,\n    Inactive,\n}",
+        "status.rs",
+    );
+
+    assert_eq!(result.elements().len(), 1);
+    assert_eq!(result.elements()[0].name(), "Status");
+    assert_eq!(result.elements()[0].kind(), CodeElementKind::Enum);
+}
+
+#[test]
+fn extracts_rust_trait() {
+    let result = analyze_rust("pub trait Repository {\n    fn find(&self);\n}", "repo.rs");
+
+    assert_eq!(result.elements().len(), 1);
+    assert_eq!(result.elements()[0].name(), "Repository");
+    assert_eq!(result.elements()[0].kind(), CodeElementKind::Trait);
+}
+
+#[test]
+fn extracts_composition_from_struct_fields() {
+    let source =
+        "pub struct Order {\n    id: u64,\n}\npub struct OrderService {\n    order: Order,\n}";
+    let result = analyze_rust(source, "service.rs");
+
+    assert_eq!(result.elements().len(), 2);
+    assert_eq!(result.relationships().len(), 1);
+    assert_eq!(result.relationships()[0].source(), "OrderService");
+    assert_eq!(result.relationships()[0].target(), "Order");
+    assert_eq!(
+        result.relationships()[0].kind(),
+        RelationshipKind::Composition
+    );
+}
+
+#[test]
+fn extracts_inheritance_from_trait_impl() {
+    let source = "pub trait Printable {}\npub struct Order {}\nimpl Printable for Order {}";
+    let result = analyze_rust(source, "order.rs");
+
+    let inheritance: Vec<_> = result
+        .relationships()
+        .iter()
+        .filter(|r| r.kind() == RelationshipKind::Inheritance)
+        .collect();
+
+    assert_eq!(inheritance.len(), 1);
+    assert_eq!(inheritance[0].source(), "Order");
+    assert_eq!(inheritance[0].target(), "Printable");
+}
+
+#[test]
+fn extracts_use_imports() {
+    let source =
+        "use crate::domain::Order;\nuse crate::ports::Repository;\n\npub struct Service {}";
+    let result = analyze_rust(source, "service.rs");
+
+    let imports: Vec<_> = result
+        .relationships()
+        .iter()
+        .filter(|r| r.kind() == RelationshipKind::Import)
+        .collect();
+
+    assert!(imports.iter().any(|r| r.target() == "crate::domain::Order"));
+    assert!(
+        imports
+            .iter()
+            .any(|r| r.target() == "crate::ports::Repository")
+    );
+}
+
+#[test]
+fn filters_std_and_external_crate_imports() {
+    let source =
+        "use std::collections::HashMap;\nuse serde::Serialize;\nuse crate::models::Order;\n";
+    let result = analyze_rust(source, "lib.rs");
+
+    let imports: Vec<_> = result
+        .relationships()
+        .iter()
+        .filter(|r| r.kind() == RelationshipKind::Import)
+        .collect();
+
+    assert_eq!(imports.len(), 1);
+    assert_eq!(imports[0].target(), "crate::models::Order");
+}
+
+#[test]
+fn extracts_mod_declarations() {
+    let source = "mod models;\nmod services;\npub struct App {}";
+    let result = analyze_rust(source, "lib.rs");
+
+    let imports: Vec<_> = result
+        .relationships()
+        .iter()
+        .filter(|r| r.kind() == RelationshipKind::Import)
+        .collect();
+
+    assert!(imports.iter().any(|r| r.target() == "crate::models"));
+    assert!(imports.iter().any(|r| r.target() == "crate::services"));
+}